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to the internal network. The specified port will be accessible from the external network.
Type
is the Layer 3 protocol (IP) type which needs to be forwarded from the internal
network. Public Port is the TCP/UDP port of the based device which will accept and
forward the connections from the external network to the host connected to the internal
network.
Comments
are an informal field for a particular port forwarding entry. Usually, only a few
words about the particular port forwarding entry purpose are saved. An enabled flag can
either enable or disable a particular port forwarding entry.
New entries in port forwarding can be saved by activating
the ‘Save’ button or can be discarded by
activating
the ‘Cancel’ button in the port forwarding configuration window.
PPPoE
: Point-to-Point Protocol over Ethernet (PPPoE) is a virtual private and secure connection
between two systems which enables encapsulated data transport. It is commonly used as the
medium for subscribers to connect to internet service providers. Select the IP address option
PPPoE to configure a PPPoE tunnel in order to connect to an ISP. Only the external network
interface can be configured as a PPPoE client, and all the traffic will be sent via this tunnel. The IP
address, default gateway IP and DNS server IP address will be obtained from the PPPoE server
after the PPPoE connection is established. The broadcast address is used for the PPPoE server
discovery and tunnel establishment. A valid authorization with credentials is required for the
PPPoE connection.
PPPoE Username
– The username to connect to the server (must match the configured
on the PPPoE server).
Password
– The password to connect to the server (must match the configured on the
PPPoE server).
PPPoE MTU/MRU
– The size (in bytes) of the Maximum Transmission Unit (MTU) and
Maximum Receive Unit (MRU) used for the data encapsulation while transferring it
through the PPP tunnel.
Enable DMZ:
The Demilitarized Zone (DMZ) can be enabled and used as a place where services
can be placed, such as, web servers, proxy servers, and e-mail servers. These services can still
serve the local network and at the same time are isolated from it for additional security. DMZ is
commonly used with the NAT functionality as an alternative for the port forwarding while making
all the ports of the host network device be visible from the external network side.
DMZ Management Port:
The
web management port for the based device (TCP/IP port 80 by
default) will be used for the host device if DMZ management port option is enabled. In this case,
the device will respond to the requests from the external network as if it was the host specified
with the DMZ IP. It is recommended to leave the management port disabled while the based
device will become inaccessible from the external network if it is enabled.